public class If1
{
	public static void main(String [] args)
	{
		int i=20;
		if(i<20)
			System.out.println("<20");
		else if(i<40)
			System.out.println("<40");
		else if(i<60)
			System.out.println("<60");
		else
			System.out.println(">=60");
	}
}